CN118104373A - Terminal and wireless communication method - Google Patents

Abstract

UL transmissions are appropriately controlled even in the case where a plurality of UL transmissions having different priorities overlap. A terminal according to an embodiment of the present disclosure includes: a control unit configured to control simultaneous transmission of an uplink control channel and an uplink shared channel in at least one of a plurality of steps when the overlapping is resolved by the plurality of steps in at least one of a case where a plurality of UL transmissions having the same priority overlap and a case where a plurality of UL transmissions having different priorities overlap; and a transmitting unit configured to perform UL transmission in which the overlapping is resolved.

Description

Terminal and wireless communication method

Technical Field

The present disclosure relates to a terminal and a wireless communication method in a next generation mobile communication system.

Background

In a universal mobile telecommunications system (Universal Mobile Telecommunications System (UMTS)) network, long term evolution (Long Term Evolution (LTE)) is standardized for the purpose of further high-speed data rates, low latency, and the like (non-patent document 1). Further, for the purpose of further large capacity, high altitude, and the like of LTE (third generation partnership project (Third Generation Partnership Project (3 GPP)) Release (rel.)) versions 8 and 9, LTE-Advanced (3 GPP rel.10-14) has been standardized.

Subsequent systems of LTE (e.g., also referred to as fifth generation mobile communication system (5 th generation mobile communication system (5G)), 5g+ (plus), new Radio (NR)), 3gpp rel.15 later, and the like are also being studied.

Prior art literature

Non-patent literature

Non-patent document 1：3GPP TS 36.300V8.12.0"Evolved Universal Terrestrial Radio Access(E-UTRA)and Evolved Universal Terrestrial Radio Access Network(E-UTRAN);Overall description;Stage 2(Release 8)",2010, month 4

Disclosure of Invention

Problems to be solved by the invention

In future wireless communication systems (e.g., 5G, NR, etc.), for example, cases are conceived in which a plurality of services (also referred to as use cases (use cases), communication types, etc.) having different communication requirements (requirements) are mixed, such as high speed and large capacity (e.g., enhanced mobile broadband (enhanced Mobile Broad Band (eMBB))), ultra-multiple terminals (e.g., large-scale machine-like communication (MASSIVE MACHINE TYPE Communication (mMTC)), internet of things (Internet of Things (IoT))), ultra-high reliability and low latency (e.g., ultra-high reliability and low latency communication (Ultra Reliable and Low Latency Communications (URLLC))), etc.

For example, after rel.16, a case is studied in which priorities are set for signals/channels, and communication is controlled based on the priorities set for the signals/channels. For example, in the case where a plurality of signals/channels overlap, it is conceivable to control transmission and reception based on the priority of each signal/channel.

On the other hand, in future wireless communication systems (e.g., rel.17 and later), there is also considered a case where a plurality of UL transmissions, which are transmitted in different carriers (or cells, CCs) respectively, overlap in the time domain and the priorities among the plurality of UL transmissions are different.

In the case concerned, a case is also envisaged in which simultaneous transmission of UL transmissions of different priorities is allowed. Or, it is assumed that multiplexing/mapping of UL signals with different priorities to a specific UL channel is allowed even in the case where a plurality of UL transmissions with different priorities overlap according to UE capabilities or the like. In this way, in the case where a plurality of UL transmissions having different priorities are set/scheduled in the same time domain, how to control UL transmissions has not been fully studied.

Accordingly, an object of the present disclosure is to provide a terminal and a wireless communication method capable of appropriately controlling UL transmission even in a case where a plurality of UL transmissions having different priorities overlap.

Means for solving the problems

A terminal according to an embodiment of the present disclosure includes: a control unit configured to control simultaneous transmission of an uplink control channel and an uplink shared channel in at least one of a plurality of steps when the overlapping is resolved by the plurality of steps in at least one of a case where a plurality of UL transmissions having the same priority overlap and a case where a plurality of UL transmissions having different priorities overlap; and a transmitting unit configured to perform UL transmission in which the overlapping is resolved.

Effects of the invention

According to one aspect of the present disclosure, UL transmissions can be appropriately controlled even in a case where a plurality of UL transmissions having different priorities overlap.

Drawings

Fig. 1A and 1B are diagrams illustrating an example of priority-based UL transmission control.

Fig. 2 is a diagram showing another example of priority-based UL transmission control.

Fig. 3 is a diagram showing an example of a conflict processing framework in rel.16.

Fig. 4 is a diagram showing an example of a conflict processing framework assumed in rel.17 and later.

Fig. 5 is a diagram showing another example of a conflict processing framework conceived in rel.17 and later.

Fig. 6 is a diagram showing an example of a conflict processing framework in the first embodiment.

Fig. 7A and 7B are diagrams illustrating an example of UL transmission control in the case of collision in the first embodiment.

Fig. 8 is a diagram showing another example of the conflict processing framework in the first mode.

Fig. 9 is a diagram showing another example of the conflict processing framework in the first mode.

Fig. 10A and 10B are diagrams showing another example of UL transmission control in the case of collision in the first mode.

Fig. 11 is a diagram showing another example of UL transmission control in the case of collision in the first mode.

Fig. 12 is a diagram showing another example of UL transmission control in the case of collision in the first mode.

Fig. 13 is a diagram showing another example of UL transmission control in the case of collision in the first mode.

Fig. 14A and 14B are diagrams showing other examples of UL transmission control in the case of collision in the first embodiment.

Fig. 15 is a diagram showing another example of UL transmission control in the case of collision in the first mode.

Fig. 16 is a diagram for explaining conditions for simultaneous transmission of PUCCH and PUSCH.

Fig. 17 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment.

Fig. 18 is a diagram showing an example of a configuration of a base station according to one embodiment.

Fig. 19 is a diagram showing an example of a configuration of a user terminal according to an embodiment.

Fig. 20 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to one embodiment.

Detailed Description

< Service type >

In future wireless communication systems (e.g., NR), further elevations of mobile broadband (e.g., enhanced mobile broadband (enhanced Mobile Broad Band (eMBB))), machine type communications (e.g., large-scale machine type communications (MASSIVE MACHINE TYPE Communication (mMTC)), internet of things (Internet of Things (IoT))), high-reliability and low-latency communications (e.g., ultra-reliability and low-latency communications (Ultra Reliable and Low Latency Communications (URLLC))), and other traffic types (also referred to as services, service types, communication types, use cases, etc.) are contemplated. For example, in URLLC, delays less than eMBB and higher reliability are required.

In the physical layer, the traffic type may also be identified based on at least one of the following.

Logical channels with different priorities

Modulation and coding scheme (Modulation and Coding Scheme (MCS)) table (MCS index table)

Channel quality indication (Channel Quality Indication (CQI)) table

DCI Format

Scrambling (mask) of (radio network temporary identifier (RNTI: system information-radio network temporary identifier (System Information-Radio Network Temporary Identifier)) used for (additional) cyclic redundancy check (Cyclic Redundancy Check (CRC)) bits contained in the DCI (DCI format))

RRC (radio resource control (Radio Resource Control)) parameters

Specific RNTI (e.g., URLLC RNTI, MCS-C-RNTI, etc.)

Search space

Specific fields within DCI (e.g., newly appended fields or reuse of existing fields)

Specifically, the service type of the HARQ-ACK for the PDSCH may be determined based on at least one of the following.

MCS index table (e.g., whether MCS index table 3 is used) used for determination of at least one of modulation order (modulation order), target code rate (target code rate), and transport block size (Transport Block size (TBS)) of the PDSCH

RNTI used in CRC scrambling of DCI used for scheduling of the PDSCH (e.g., by which of the C-RNTI or MCS-C-RNTI is CRC scrambled)

The service type of the SR may be determined based on a higher layer parameter used as an identifier (SR-ID) of the SR. The higher layer parameters may also indicate which of eMBB or URLLC the traffic type of the SR is.

The traffic type of CSI may be determined based on configuration information (CSIreportSetting) related to CSI reporting, the DCI type used in the trigger, or DCI transmission parameters. The setting information, DCI type, etc. may also indicate which of eMBB or URLLC the traffic type of the CSI is. The setting information may be a high-level parameter.

Further, the traffic type of PUSCH may also be decided based on at least one of the following.

MCS index table used for determination of at least one of the number of modulations of the PUSCH, target coding rate, TBS (for example, whether or not MCS index table 3 is used)

RNTI used in CRC scrambling of DCI used for scheduling of the PUSCH (e.g., by which of the C-RNTI or MCS-C-RNTI is CRC scrambled)

The service type may be associated with a communication requirement (a requirement such as delay and error rate), a data type (voice, data, etc.), and the like.

The element URLLC may differ from the element eMBB by a delay (latency) of less than eMBB for URLLC, or by an element URLLC including a reliability element.

For example, the user (U) plane delay requirement of eMBB may also include: the U-plane delay of the downlink is 4ms and the U-plane delay of the uplink is 4ms. On the other hand, the U-plane delay requirement of URLLC may also include: the U-plane delay of the downlink is 0.5ms and the U-plane delay of the uplink is 0.5ms. Furthermore, the requirements of the reliability of URLLC may also include: in a U-plane delay of 1ms, the error rate of 32 bytes is 10 ^-5.

In addition, as an enhancement of ultra-reliable and low-delay communication (eURLLC), a high degree of reliability (reliability) of a service for unicast data is being studied. Hereinafter, without distinction URLLC and eURLLC, it is simply referred to as URLLC.

< Setting of priority >

In NR after rel.16, priority of setting a plurality of levels (for example, 2 levels) for a specific signal or channel is being studied. For example, it is conceivable to set individual priorities for each of signals or channels respectively corresponding to different traffic types (also referred to as service, service type, communication type, use case, etc.), and to control communication (for example, transmission control at the time of collision, etc.). Thus, for the same signal or channel, different priorities can be set according to the service type and the like, and communication can be controlled.

The priority may also be set for at least one of a signal (e.g., UCI such as HARQ-ACK, a reference signal, etc.), a channel (PDSCH, PUSCH, PUCCH, etc.), a reference signal (e.g., channel State Information (CSI), sounding Reference Signal (SRS), etc.), a Scheduling Request (SR), and a HARQ-ACK codebook. The priorities may be set for the PUCCH used for SR transmission, the PUCCH used for HARQ-ACK transmission, and the PUCCH used for CSI transmission.

The priority may also be defined as a first priority (e.g., high), and a second priority (e.g., low) that is lower than the first priority. Hereinafter, the first priority is also referred to as HP, and the second priority is also referred to as LP. Or 3 or more priorities may be set.

For example, the priority may be set for HARQ-ACK for dynamically scheduled PDSCH, HARQ-ACK for semi-persistent PDSCH (SPS PDSCH), and HARQ-ACK for SPS PDSCH release. Or may be prioritized for HARQ-ACK codebooks corresponding to these HARQ-ACKs. In addition, when the priority is set for the PDSCH, the priority of the PDSCH may be replaced with the priority of the HARQ-ACK for the PDSCH.

Further, the priority may be set for PUSCH based on dynamic grant (DYNAMIC GRANT-based), PUSCH based on set grant (configured grant-based), or the like.

The information about the priority may also be notified to the UE from the base station using at least one of higher layer signaling and DCI. For example, the priority of the scheduling request may also be set by a higher layer parameter (e.g., schedulingRequestPriority). The priority of HARQ-ACK for PDSCH (e.g., dynamic PDSCH) scheduled through DCI may also be notified through the DCI. The priority of HARQ-ACK for SPS PDSCH may also be set by higher layer parameters (e.g., HARQ-ACK-Codebook-indicator-forSPS) or may be notified by DCI indicating activation of SPS PDSCH. The P-CSI/SP-CSI transmitted in the PUCCH may also be set to a specific priority (e.g., low). On the other hand, the a-CSI/SP-CSI transmitted in the PUSCH may also be notified of priority through DCI (e.g., DCI for triggering or DCI for activating).

The priority of PUSCH based on dynamic grant may also be notified by DCI scheduling the PUSCH. The priority of PUSCH based on the setting grant may also be set by a higher layer parameter (e.g., priority). The a-SRS triggered by the P-SRS/SP-SRS, DCI (e.g., DCI format 0_1/DCI format 2_3) may also be set to a specific priority (e.g., low).

(Overlap of UL transmissions)

In case of multiple UL signals/UL channels overlapping (or colliding), the UE may also control UL transmission based on priority.

The overlapping of the plurality of UL signals/UL channels may be a case where time resources (or time resources and frequency resources) of the plurality of UL signals/UL channels overlap or a case where transmission timings of the plurality of UL signals/UL channels overlap. The time resources may also be replaced by time domains or time domains. The time resource may also be a symbol, a slot, a sub-slot, or a sub-frame unit.

A case where multiple UL signals/UL channels overlap in the same UE (e.g., intra-UE) may also mean that multiple UL signals/UL channels overlap in at least the same time resource (e.g., symbol). In addition, the case of UL signal/UL channel collision (collision) in different UEs (e.g., inter-UE) may also mean that multiple UL signal/UL channels overlap in the same time resource (e.g., symbol) and frequency resource (e.g., RB).

For example, in case that a plurality of UL signals/UL channels having the same priority are overlapped, the UE performs control to multiplex (multiplex) the plurality of UL signals/UL channels to 1 UL channel and transmit (refer to fig. 1).

Fig. 1A shows a case where HARQ-ACK (or PUCCH for HARQ-ACK transmission) with the first priority (HP) is set and the HARQ-ACK (or PUSCH for UL data/UL-SCH transmission) with the first priority (HP) is set. In this case, the UE multiplexes (or maps) HARQ-ACKs to PUSCH and transmits both UL data and HARQ-ACKs.

In the case where a plurality of UL signals/UL channels having different priorities overlap, the UE may control to perform UL transmission having a higher priority (e.g., perform UL transmission having a higher priority) and not perform UL transmission having a lower priority (e.g., discard) (see fig. 1B).

Fig. 1B shows a case where UL data/HARQ-ACK (or UL channel for UL data/HARQ-ACK transmission) with the first priority (HP) set and UL data/HARQ-ACK (or UL channel for UL data/HARQ-ACK transmission) with the second priority (LP) set overlap. In this case, the UE may control to discard UL data/HARQ-ACK with low priority and transmit UL data/HARQ-ACK with high priority preferentially (prioritize). The UE may change (for example, delay or shift) the transmission timing of the UL transmission with a low priority.

In case that more than 2 (or 3 or more) UL signals/UL channels overlap in the time domain, transmission can also be controlled by 2 steps (refer to fig. 2).

In step 1, 1 UL channel is selected to multiplex UL signals transmitted in UL transmission of the same priority. In fig. 2, an SR (or PUCCH for SR transmission) and an HARQ-ACK (or PUCCH for HARQ-ACK transmission) having the first priority (HP) may be multiplexed to a specific UL channel (here, PUCCH for HARQ-ACK transmission). Similarly, HARQ-ACK (or PUCCH for HARQ-ACK transmission) and data (or PUSCH for data/UL-SCH transmission) having the second priority (LP) may be multiplexed to a specific UL channel (here, PUSCH).

In step 2, control may be performed such that UL transmissions having a high priority are preferentially transmitted between UL transmissions having different priorities, and UL transmissions having a low priority are discarded. In fig. 2, the SR having the first priority (HP) and the PUCCH for HARQ-ACK transmission may be preferentially transmitted, and the HARQ-ACK having the second priority (LP) and the PUSCH for data transmission may be discarded.

As such, the UE can resolve the collision between the plurality of UL transmissions having the same priority through step 1, and can resolve the collision between the plurality of UL transmissions having different priorities through step 2. Fig. 2 shows a case where the multiplexing process between UL transmissions with the same priority is performed in step 1, but the present invention is not limited to this. For example, in step 1, among the plurality of UL transmissions that overlap, the multiplexing process may be performed first for UL transmissions having a low priority (for example, second priority) and then for UL transmissions having a high priority (for example, first priority).

< Simultaneous Transmission/multiplexing of UL transmissions of different priorities >

In addition, a case is considered in which a plurality of UL transmissions transmitted on different carriers (or cells or CCs) overlap in the time domain and the priorities among the plurality of UL transmissions are different.

For example, when UL channels/UL signals are scheduled in different carriers between cells (inter-cells) supported by different RFs (Radio frequencies), transmitting each UL channel/UL signal is useful from the viewpoints of low delay and spectral efficiency. When the UE supports RF processing for different carriers (CCs), the UL channel/UL signal is transmitted to each carrier, thereby improving the efficiency of resource utilization and reducing the delay.

For example, for each UE supporting an inter-band carrier aggregation (e.g., inter-band (CA)) function, PUCCH/PUSCH supporting different priorities (e.g., PHY priorities) in different cells may be simultaneously transmitted and set by RRC within the same PUCCH group.

Or in the case where multiple UL transmissions of different priorities are scheduled in an intra-cell/inter-cell (inter-cell) or the like, multiplexing (e.g., transmission using the same UL channel) of UL transmissions of different priorities may be supported. For example, the plurality of UL transmissions may be supported by multiplexing UL transmissions of a certain priority to UL channels for UL transmissions of other priorities and transmitting the multiplexed UL transmissions.

Research is underway: in future wireless communication systems (e.g., rel.17 and later), the case of multiplexing HARQ-ACKs of High Priority (HP) and HARQ-ACKs of Low Priority (LP) to PUCCH; a case where HARQ-ACK of Low Priority (LP) and SR of High Priority (HP) are multiplexed to PUCCH for the combination of PUCCH formats of HARQ-ACK/SR; and multiplexing the HARQ-ACK of Low Priority (LP) and the HARQ-ACK and SR of High Priority (HP) to the PUCCH.

Furthermore, studies are underway: in future wireless communication systems (e.g., rel.17 and later), the HARQ-ACK of LP is multiplexed to PUSCH of HP; a case of multiplexing HARQ-ACK of HP in PUSCH of LP; multiplexing the HARQ-ACK of the LP, the PUSCH of the HP transmitting the UL-SCH, and the HARQ-ACK/CSI of the HP; and multiplexing the HARQ-ACK of the HP, the PUSCH transmitting the LP of the UL-SCH, and the HARQ-ACK/CSI of the LP.

Furthermore, studies are underway: in future wireless communication systems (e.g., rel.17 and later), simultaneous transmission of PUCCH/PUSCH in different cells is supported at least for inter-band CA. Furthermore, studies are underway: for each UE with inter-band CA function, simultaneous transmission of PUCCH/PUSCH of different physical priorities (e.g., PHY priority (priorities)) within the same PUCCH group is set to be RRC-settable in different cells.

In rel.16nr, in order to solve overlapping of UL channels having different priorities, the following operation is specified.

Function 1 (feature) 1): multiplexing (multiplexing) of the same priority with each other

Function 1-1: multiplexing between PUCCHs of the same priority

Function 1-2: multiplexing between PUCCH/PUSCH of the same priority

Function 2: prioritization of different priorities

Cancellation (cancel) of LP channels in case of overlap with HP channels (e.g. overlap of PUCCH/PUSCH)

The framework of conflict handling (e.g., collision handling) for rel.16nr is defined as follows (see fig. 3).

Multiplexing LP channel (function 1)

In case of overlap of LP channel and HP channel, LP channel is cancelled (function 2)

Multiplexing HP channel (function 1)

In case of overlap of LP channel and HP channel, LP channel is cancelled (function 2)

In rel.17nr and later, it is assumed that multiplexing between different priorities is introduced/supported (function 3) and simultaneous transmission of PUCCH and PUSCH (function 4). To address the overlapping of UL channels of different priorities, consider supporting the following operations.

Function 1 (feature) 1): multiplexing (multiplexing) of the same priority with each other

Function 1-1: multiplexing between PUCCHs of the same priority

Function 1-2: multiplexing between PUCCH/PUSCH of the same priority

Function 2: prioritization of different priorities

Cancellation of LP_PUCCH/PUSCH

Function 3: multiplexing of different priorities

Function 3-1: multiplexing of different priority PUCCHs

·HP_HARQ-ACK vs.LP_HARQ-ACK

·HP_SR vs.LP_HARQ-ACK

Function 3-2: multiplexing of PUCCH/PUSCH of different priorities

HP/LP_HARQ-ACK on LP/HP_PUSCH (HP/LP_HARQ-ACK on LP/HP_PUSCH)

HP_HARQ-ACK, LP_HARQ-ACK (HP_HARQ-ACK, LP_HARQ-ACK on HP/LP_ PUSCH with or without CSI) on HP/LP_PUSCH with or without CSI

Function 4: simultaneous transmission of PUCCH/PUSCH (Simultaneous PUCCH/PUSCH Tx)

For the framework of collision handling of PUCCH/PUSCH with different priorities, option 1 or option 2 below is envisaged.

< Option 1>

Multiplexing is first performed between overlapping channels of the same priority and then between channels of different priorities (refer to fig. 4). For multiplexing between different priorities, the PUCCH may be first multiplexed, and then the PUCCH and the PUSCH may be multiplexed.

< Option 2>

The PUCCHs of HP and LP are initially multiplexed, and then the PUCCHs and PUSCHs are multiplexed (refer to fig. 5).

In this case, alt.1 or alt.2 is also conceivable as a framework of collision processing of PUCCHs of HP and LP.

《Alt.1》

Multiplexing supported in rel.15 was utilized as baseline (base line). Specifically, a single check (SINGLE CHECK)/multiplexing step is performed between all PUCCHs.

《Alt.2》

After multiplexing (if any) between overlapping channels of the same priority, a single check/multiplexing step is allowed between PUCCHs of different priorities.

In the case of simultaneous transmission of PUCCH/PUSCH (function 4) after rel.17, how to control is a problem for a framework that considers UL collision handling of simultaneous transmission of PUCCH/PUSCH (function 4).

For example, in the case where function 4 is introduced in the framework of UL collision handling, how to cooperate with other functions (cooperate) becomes a problem.

Or how to handle the interaction (interaction) of UCI/PUSCH multiplexing with simultaneous transmission of PUCCH/PUSCH becomes a problem in the case where support function 1-2 or function 3-2 operates together with function 4. For example, how to control the order of UCI/PUSCH multiplexing and simultaneous PUCCH/PUSCH transmission, or how to set/apply the requirement of a timeline (timeline) becomes a problem.

When simultaneous PUCCH/PUSCH transmission is performed, there is a concern that an influence on UCI/PUSCH multiplexing may occur.

The present inventors have studied UL collision processing in the case of simultaneous transmission of PUCCH and PUSCH, and have conceived one embodiment of the present embodiment.

Embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. The structures described in the embodiments may be applied separately or in combination.

In the present disclosure, "a/B", "at least one of a and B" may also be replaced with each other. At least one of A and B may be replaced with A and B. Likewise, in this disclosure, "at least one of A/B/C", "A, B, and C" may also be substituted for each other. A. At least one of B and C may also be replaced with A and B, A and C, or B and C.

In the present disclosure, the higher layer signaling may also be, for example, one of RRC (radio resource control (Radio Resource Control)) signaling, MAC (medium access control (Medium Access Control)) signaling, broadcast information, or the like, or a combination thereof.

For example, MAC Control Element (MAC CE (Control Element)), MAC PDU (protocol data unit (Protocol Data Unit)) and the like can be used for the MAC signaling. The broadcast information may be, for example, a master information block (Master Information Block (MIB)), a system information block (System Information Block (SIB)), minimum system information (minimum system information remaining (REMAINING MINIMUM SYSTEM INFORMATION (RMSI))), other system information (Other System Information (OSI)), or the like.

In the following description, as the priority of UL transmission, 2 ranks, that is, the first priority (HP) and the second priority (LP), are exemplified, but the priority is not limited to 2 ranks. Priority levels of 3 or more levels may be set.

In the present disclosure, UL transmission, UL channel, UL signal may also be replaced with each other, respectively. In addition, in the present disclosure, carriers, cells, CCs, BWP, frequency bands (bands) may also be replaced with each other, respectively. Further, in the present disclosure, "sent" may be replaced with scheduled, set, or allocated.

In the following description, PUSCH may be replaced with PUSCH transmission, PUSCH resources, PUSCH allocation, or PUSCH timing (occalasion). Likewise, PUCCH may be replaced by PUCCH transmission, PUCCH resources, PUCCH allocation, or PUCCH timing.

(First mode)

In the first embodiment, a UE operation in the case of applying simultaneous transmission of PUCCH/PUSCH (function 4) in a UL collision handling framework (for example UL collision handling framework) will be described. In addition, applications may be replaced with activation/enablement/settings. The priorities may be the same or different for PUCCH and PUSCH that are simultaneously transmitted.

In at least one of the case where a plurality of UL transmissions having the same priority and the case where a plurality of UL transmissions having different priorities overlap, the UE may solve the overlapping by using a plurality of steps (or functions). In the case concerned, the UE may also control the application of simultaneous transmission of PUCCH/PUSCH in at least one of a plurality of steps (or functions).

In the case where function 4 is applied to the UL collision handling framework, at least one of the following options 1-1 to 1-2 may be applied.

< Option 1-1>

The function 4 may be configured to cooperate with only an existing system (e.g., the function of rel. 16). That is, function 4 may also cooperate with function 1 (e.g., functions 1-2)/function 2.

If the purpose of function 4 is to solve the collision between PUCCH and PUSCH, it is necessary to control whether or not functions 1 to 2 (UCI/PUSCH multiplexing of the same priority) supported in rel.16 function. For example, at least one of the following options 1-1-1 to 1-2 may also be applied.

Option 1-1-1

Functions 1-2 supported in rel.16 may also be supported to operate with function 4. In this case, functions 1-1, 1-2, and 4 may be applied as the functions of the frame of UL collision processing.

Function 1-1: multiplexing of PUCCHs of the same priority

Function 1-2: multiplexing of PUCCH/PUSCH of same priority

Function 2: prioritization of different priorities

Function 4: simultaneous transmission of PUCCH/PUSCH

Based on the rel.16 conflict handling framework, function 4 may or may not be applied for any step with functions 1-2/function 2 (see fig. 6). In fig. 6, a case is shown where the application of function 4 is supported for any step having functions 1-2/function 2.

Whether or not to apply the function 4, in which step the function 4 is applied, may be defined in the specification, may be set by high-level signaling, or may be determined based on the condition of the timeline (for example, timeline condition checking).

[ Interaction of function 2 with function 4 ]

In function 2, the PUCCH/PUSCH collision for HP and LP takes into account the interaction between function 2 and function 4. In the case where the simultaneous transmission condition of PUCCH/PUSCH is satisfied in the case of collision, the configuration may be such that the conflicting LP channel (simultaneous transmission of PUCCH/PUSCH) is not discarded. In other cases, conflicting LP channels may also be discarded.

[ Interaction of Functions 1-2 with Functions 4]

The interaction between the function 1-2 and the function 4 may be a structure in which the function 1-2 is applied before the function 4 or a structure in which the function 1-2 is applied after the function 4.

Consider the case where function 4 is applied before functions 1-2. In the case where the simultaneous transmission of PUCCH/PUSCH satisfies a specific condition (for example, in the case where the collision situation is satisfied), PUSCH and PUCCH may not be multiplexed. In other cases, UCI may also be multiplexed to PUSCH (refer to fig. 7A). The specific conditions may be defined by either specifications or by higher layer signaling. Or whether or not an application (e.g., active/inactive, or active/inactive) of simultaneous transmission of PUCCH/PUSCH in a collision situation from a base station for a UE is also set.

Consider the case where functions 1-2 are applied before function 4. In rel.16, no conditions other than the time line are defined for multiplexing UCI/PUSCH of the same priority. In this case, a condition for judging whether UCI is multiplexed to PUSCH or UCI is simultaneously transmitted in PUCCH with PUSCH (or UCI is multiplexed to PUCCH simultaneously transmitted with PUSCH) may be additionally and defined.

For example, when the addition condition is satisfied, UCI may be multiplexed to PUSCH and the collided PUCCH may not be transmitted (see fig. 7B). In other cases, transmission may be controlled based on the conditions of simultaneous PUCCH/PUSCH transmission. The condition of simultaneous transmission of PUCCH/PUSCH may be defined by a specification, or activation/deactivation of simultaneous transmission of PUCCH/PUSCH may be set from a base station.

The simultaneous transmission of PUCCH/PUSCH may be performed when the condition of the simultaneous transmission of PUCCH/PUSCH is satisfied for the collision situation. In other cases, the operation may be returned to PUCCH/PUSCH multiplexing (UCI multiplexing in PUSCH).

The addition condition may be determined based on conditions (for example, PUCCH length and PUSCH length) from the viewpoint of reliability, or based on conditions (for example, PUCCH and PUSCH end symbols) from the viewpoint of delay.

Alternatively, the additional condition related to the multiplexing of UCI/PUSCH may not be defined. In this case, UCI may be multiplexed on PUSCH at all times, and PUSCH may not be transmitted.

Option 1-1-2

In the case where function 4 is applied/activated, function 1-2 supported in rel.16 may be configured not to be applied in the framework of UL collision processing. In this case, functions 1 to 1, 2, and 4 may be applied as the functions of the framework of UL collision processing.

Function 1-1: multiplexing of PUCCHs of the same priority

Function 2: prioritization of different priorities

Function 4: simultaneous transmission of PUCCH/PUSCH

Based on the rel.16 conflict handling framework, in the case where function 4 is applied, functions 1-2 may also be controlled not to be applied (e.g., functions 1-2 and function 4 may also be swapped). Further, the function 4 may or may not be applied for a specific step having the function 2 (refer to fig. 8). Fig. 8 shows a case where an application of function 4 is supported for an arbitrary step having function 2.

In function 4, in case that a specific condition is satisfied for a collision situation, simultaneous transmission of PUCCH/PUSCH may also be applied. Otherwise, PUCCH or PUSCH may be discarded. In function 2, for PUCCH/PUSCH collisions for HP and LP, the interaction of function 2 with function 4 shown in option 1-1-1 may also be applied for the interaction of function 2 with function 4.

Since UCI/PUSCH multiplexing is not applied in option 1-2, simultaneous transmission of PUCCH/PUSCH or cancellation of channel can be performed due to PUCCH/PUSCH collision.

< Options 1-2>

The function 4 may be configured such that functions of both rel.16 and rel.17 and subsequent functions cooperate. That is, function 4 may also cooperate with function 1 (e.g., function 1-2)/function 2/function 3-1/function 3-2. In this case, at least one of the following options 1-2-1 to 1-2-3 may be applied.

Option 1-2-1

It is also possible to support a case where function 1-2 (UCI/PUSCH multiplexing of the same priority) and function 3-2 (UCI/PUSCH multiplexing of different priorities) operate together with simultaneous transmission of PUCCH/PUSCH. In this case, functions 1-1, 1-2, 3-1, 3-2, and 4 may be applied as the functions of the frame of UL collision processing.

Function 1-1: multiplexing of PUCCHs of the same priority

Function 1-2: multiplexing of PUCCH/PUSCH of same priority

Function 2: prioritization of different priorities

Function 3-1: multiplexing of PUCCHs of different priorities

Function 3-2: multiplexing of PUCCH/PUSCH of different priorities

Function 4: simultaneous transmission of PUCCH/PUSCH

In the UL collision handling framework after rel.17, function 4 may or may not be applied in a specific step of resolving the PUCCH/PUSCH overlap (refer to fig. 9). The presence or absence of application of the function 4, and the step of applying the function 4 (in which step the function 4 is applied) may be defined in the specification, may be set by high-level signaling, or may be determined based on the condition (for example, timeline condition checking) of the timeline.

In the case of supporting the application of function 4 in function 1-2, interactions (interactions) are considered between function 1-2 and function 4. The interaction of function 1-2 with function 4 shown in option 1-1-1 may also be applied for the interaction of function 1-2 with function 4.

In function 2, the interaction of function 2 with function 4 is considered for PUCCH/PUSCH collisions for HP and LP. In this case, the interaction of function 2 with function 4 shown in option 1-1-1 can also be applied.

[ Interaction of function 3-2 with function 4]

In the case of supporting the application of function 4 in function 3-2, interactions (interactions) are considered between function 3-2 and function 4.

The interaction between the function 3-2 and the function 4 may be a structure in which the function 3-2 is applied before the function 4 or a structure in which the function 3-2 is applied after the function 4.

[ [ Case where function 4 was applied before function 3-2 ] ]

Consider the case where function 4 is applied before function 3-2. In this case, multiplexing of partial UCI (for example, partial UCI) and simultaneous transmission of PUCCH/PUSCH for partial UCI may be not allowed. The partial UCI may also be a partial UCI (e.g., at least one of HARQ-ACK, CSI, SR).

For example, in the case where the condition of simultaneous transmission of PUCCH/PUSCH is satisfied for a collision situation, PUSCH and PUCCH may also be transmitted simultaneously (refer to fig. 10A). In other cases, UCI of PUCCH may also be multiplexed to PUSCH in case of supporting/activating UCI multiplexing to PUSCH and meeting multiplexing conditions (e.g., multiplexing condition) in case of collision. In other cases, conflicting LP channels may also be dropped.

Consider the case where HP_PUSCH and HP_HARQ-ACK/LP_HARQ-ACK overlap. In the case concerned, in the case where the condition of simultaneous transmission of PUCCH/PUSCH is satisfied, hp_pusch and PUCCH containing hp_harq-ACK/lp_harq-ACK may also be simultaneously transmitted (refer to fig. 10B). On the other hand, in the case where the condition for simultaneous transmission of PUCCH/PUSCH is not satisfied, it may be determined whether UCI (here, hp_harq-ACK/lp_harq-ACK) is multiplexed to PUSCH based on the multiplexing condition.

Or may be a structure that allows (or supports) multiplexing of partial UCI (e.g., partial UCI), simultaneous transmission of PUCCH/PUSCH for partial UCI. For example, when the hp_pusch and the plurality of UCI overlap, a part of UCI may be multiplexed to the hp_pusch, and other UCI may be simultaneously transmitted with the hp_pusch by PUCCH.

Specifically, in the case where the condition of simultaneous transmission of PUCCH/PUSCH is satisfied for the collision situation, PUSCH and PUCCH may also be transmitted simultaneously (refer to fig. 11). In other cases, in the case where it is assumed that a certain UCI not included in the PUCCH is satisfied, when the condition of simultaneous transmission of PUCCH/PUSCH is satisfied and the certain UCI can be multiplexed with one of the PUSCHs, the certain UCI may be multiplexed to the PUSCH. Further, PUCCH/PUSCH simultaneous transmission may be performed.

In other cases (for example, in a case where a UCI cannot be multiplexed to PUSCH) and a UCI is LP, the UCI may be discarded and PUCCH and PUSCH may be simultaneously transmitted. In other cases (for example, in a case where a UCI is not LP), the check (check)/judgment of the multiplexing condition may be performed again.

In other cases (for example, in a case where the condition of simultaneous transmission of PUCCH/PUSCH is not satisfied for a collision case), UCI within PUCCH may be multiplexed to PUSCH in a case where UCI is supported/activated and the multiplexing condition is satisfied for a collision case. In other cases (e.g., in the case where the multiplexing condition is not satisfied), the conflicting LP channels may also be discarded.

Consider the case where HP_PUSCH and HP_HARQ-ACK/LP_HARQ-ACK overlap. In the case concerned, a case is shown in which the simultaneous transmission condition of PUCCH/PUSCH is supported/activated for "HP PUSCH vs. LP PUCCH (with LP UCI)". On the other hand, the simultaneous transmission condition of PUCCH/PUSCH is shown for the case of "PUCCH (PUCCH with both HP and LP UCI) with HP UCI and LP UCI" without being supported. In this case, the HP HARQ-ACK may be multiplexed with respect to the HP PUSCH, and the PUSCH and the PUCCH including the LP HARQ-ACK may be simultaneously transmitted (see fig. 12).

[ [ Case where function 3-2 was applied before function 4 ] ]

Consider the case where function 3-2 is applied before function 4. In this case, at least one of the following cases 1-1 to 1-3 may be applied.

Case 1-1

For the collision scenario, consider a case where all UCI within the support/activate PUCCH is multiplexed to PUSCH, and the multiplexing condition is satisfied for the present collision scenario. In the case of this, control may be performed so that UCI is multiplexed in PUSCH and PUCCH is not transmitted (see fig. 13).

For example, consider a case where hp_pusch and hp_harq-ACK/lp_harq-ACK overlap, and lp_harq-ACK multiplexed to hp_pusch is valid. In this case, control may be performed so that the hp_harq-ACK/lp_harq-ACK is multiplexed to the PUSCH and PUCCH transmission is not performed (see fig. 14A).

Case 1-2

For the collision case, consider the case where several UCI within PUCCH cannot be multiplexed to PUSCH. In this case, the condition of the simultaneous transmission of PUCCH and PUSCH may be checked (for example, the transmission may be controlled based on the condition of the simultaneous transmission of PUCCH and PUSCH) (see fig. 13). The simultaneous transmission of PUSCH and PUCCH may be performed when the condition for the simultaneous transmission of PUCCH and PUSCH is satisfied. In other cases, conflicting LP channels may also be discarded.

For example, consider the case where hp_pusch and lp_harq-ACK/lp_csi/lp_sr overlap, and multiplexing of lp_uci in hp_pusch is not valid (not supported). In the case of this, transmission may be controlled based on the condition of simultaneous PUCCH/PUSCH transmission. In the case where the condition of simultaneous transmission of PUCCH/PUSCH is satisfied, hp_pusch and PUCCH including lp_harq-ACK/lp_csi/lp_sr may be simultaneously transmitted (refer to fig. 14B).

Cases 1 to 3

For the collision scenario, consider the case where a certain UCI (or several/a part of UCI) within the support/activation PUCCH is multiplexed to PUSCH and other UCI cannot be multiplexed to PUSCH. In the case of the above, at least one of Alt.1-2-1 to Alt.1-2-3 described below may be used.

<<Alt.1-2-1>>

A configuration may be adopted in which UCI multiplexing for PUSCH is not performed (see fig. 13). In this case, the condition of simultaneous transmission of PUCCH and PUSCH is confirmed. The simultaneous transmission of PUSCH and PUCCH may be performed when the condition for the simultaneous transmission of PUCCH and PUSCH is satisfied. Otherwise, the conflicting LP channels may be discarded.

For example, consider the case where hp_pusch and lp_harq-ACK/lp_csi/lp_sr overlap, and multiplexing of lp_uci in hp_pusch is valid (or supported). In addition, consider the case where multiplexing of lp_csi and lp_sr in hp_pusch is invalid (or not supported). In the case of the above, the UCI multiplexing for PUSCH may not be performed, and the PUSCH and PUCCH may be simultaneously transmitted when the condition for simultaneous transmission of PUCCH and PUSCH is satisfied (see fig. 15).

<<Alt.1-2-2>>

For partial UCI (e.g., partial UCI), UCI may be multiplexed in PUSCH without acknowledging (or without applying) the simultaneous transmission of PUCCH/PUSCH. Control may be performed so that 1 or more UCI capable of being multiplexed to PUSCH are multiplexed to PUSCH, and PUCCH transmission is not performed.

For example, consider the case where hp_pusch and lp_harq-ACK/lp_csi/lp_sr overlap, and multiplexing of lp_uci in hp_pusch is valid (or supported). In addition, consider the case where multiplexing of lp_csi and lp_sr in hp_pusch is invalid (or not supported). In this case, a part of UCI (for example, lp_harq-ACK) may be multiplexed to PUSCH without simultaneous transmission of PUCCH and PUSCH (see fig. 15).

<<Alt.1-2-3>>

UCI multiplexing to PUSCH may be performed for a part of UCI, and acknowledgement of simultaneous PUCCH/PUSCH transmission may be performed for PUCCH having only other UCI. In this case, the condition of simultaneous transmission of PUCCH and PUSCH may be confirmed assuming that the remaining UCI cannot be multiplexed into PUCCH.

In the case where no UCI capable of being multiplexed to PUSCH is assumed among PUCCHs, the UCI capable of being multiplexed may be multiplexed to PUSCH when a condition for simultaneous transmission of PUCCH/PUSCH is satisfied. In addition, PUSCH and PUCCH containing the remaining UCI may also be transmitted simultaneously. In other cases, the colliding LP channels may be discarded without UCI multiplexing in PUSCH, or the colliding LP channels may be discarded after UCI that can be multiplexed is multiplexed to PUSCH.

For example, consider the case where hp_pusch and lp_harq-ACK/lp_csi/lp_sr overlap, and multiplexing of lp_uci in hp_pusch is valid (or supported). In addition, consider the case where multiplexing of lp_csi and lp_sr in hp_pusch is invalid (or not supported). In the case of the above, if no UCI capable of being multiplexed to PUSCH is assumed among PUCCHs, the UCI capable of being multiplexed (for example, lp_harq-ACK) may be multiplexed to PUSCH when the condition for simultaneous transmission of PUCCH/PUSCH is satisfied. The PUSCH and the PUCCH containing the remaining UCI (e.g., lp_csi/lp_sr) may also be transmitted simultaneously (refer to fig. 15).

Option 1-2-2

Functions 1-2 (UCI/PUSCH multiplexing of the same priority) may also be supported to operate with simultaneous transmission of PUCCH/PUSCH. The function 3-2 (UCI/PUSCH multiplexing of different priorities) may be configured to transmit simultaneously with PUCCH/PUSCH without using. In this case, functions 1-1, 1-2, 3-1, and 4 may be applied as the functions of the frame of UL collision processing. The interrelationship of functions to each other (e.g., function 4 and function 1-2/function 3-1) may also be controlled based on what is shown in the other options.

Option 1-2-3

Functions 1-2 (UCI/PUSCH multiplexing of the same priority) and 3-2 (UCI/PUSCH multiplexing of different priorities) may also be set to a structure that is not supported (not used in combination) to operate together with simultaneous transmission of PUCCH/PUSCH. In this case, functions 1-1, 2, 3-1, and 4 may be applied as the functions of the frame of UL collision processing. The interrelationship of functions to each other (e.g., function 4 and function 2/function 3-1) may also be controlled based on what is shown in the other options.

As described above, by appropriately controlling the procedure in which PUCCH/PUSCH simultaneous transmission (function 4) is applied and the correlation with other functions, the overlap can be appropriately resolved in the case where a plurality of UL transmissions overlap. As a result, even when a new function (for example, PUCCH/PUSCH simultaneous transmission (function 4)) is supported and introduced in the UL collision processing framework, UL transmission can be appropriately controlled.

(Second mode)

In the second embodiment, a description is given of a sequence and a time line requirement (timeline requirement) of multiplexing and simultaneous transmission in the case where a specific multiplexing (e.g., functions 1-2/functions 3-2) is supported to operate together with functions 4 in the UL collision processing framework. In addition, the case where a particular multiplex (e.g., function 1-2/function 3-2) operates together with function 4 may also be, for example, option 1-1-1/1-2-1/1-2-2 of the first mode.

< Application order of multiplexing and Simultaneous Transmission >

In the case where a specific multiplexing (e.g., function 1-2/function 3-2) is supported to operate together with function 4, at least one of the following options 2-1-1 to 2-1-2 may be applied as an application order of multiplexing of PUCCH (UCI)/PUSCH and simultaneous transmission of PUCCH/PUSCH.

Option 2-1-1

PUCCH (UCI)/PUSCH multiplexing may also be performed before application/verification/judgment of simultaneous transmission of PUCCH/PUSCH. For example, function 1-2/function 3-2 may also be applied before function 4. Thus, transmission using PUSCH can be preferentially performed for UCI that can be multiplexed to PUSCH.

Option 2-1-2

The simultaneous transmission of PUCCH/PUSCH may also be performed prior to PUCCH (UCI)/PUSCH multiplexing. For example, function 1-2/function 3-2 may also be applied after function 4. In this case, the PUCCH can be preferentially used as a channel used for transmission of UCI.

< Timeline requirement >

In the case where a particular multiplex (e.g., function 1-2/function 3-2) is supported to operate with function 4, the timeline requirement may also apply at least one of options 2-2-1 through option 2-2-2 below. In addition, the following options 2-2-1 to 2-2 may also be applied to a case where simultaneous transmission of PUCCH/PUSCH (e.g., function 4) and multiplexing of PUCCH/PUSCH (e.g., function 1-2/function 3-2) are defined with different timeline requirements.

Option 2-2-1

The most stringent timeline (e.g., most STRINGENT TIMELINE) may also be required. For example, in the case where a time line corresponding to simultaneous transmission of PUCCH/PUSCH and a time line corresponding to multiplexing of PUCCH/PUSCH are defined/set separately, each function may be applied while satisfying the most stringent (e.g., shortest period) time line.

The UE may also apply the functions in case of satisfying timelines respectively corresponding to a plurality of functions (e.g., 2 functions). On the other hand, in the case where at least one timeline is not satisfied, the UE may also control not to apply functions (or not to apply a part of functions).

In the case where the timeline condition is not satisfied, it may also be determined as an error (error) condition.

Option 2-2-2

A loosest timeline (e.g., most relaxed timeline) may also be required.

In the case where the most stringent timeline (e.g., most STRINGENT TIMELINE) conditions are satisfied, a plurality of functions (e.g., function 4, function 1-2/function 3-2) may also be applied in their entirety.

When the time line condition is satisfied for a certain function but not for other functions, only the function corresponding to the satisfied time line condition may be applied. On the other hand, functions for which the timeline is not satisfied may not be applied. In the UL collision processing framework, when a UE applies/uses a certain function (e.g., function 4) and another function (e.g., function 1-2/function 2/3-2), the UE may determine whether or not to apply/order of each function based on a time line corresponding to each function.

In the case where the time line is not satisfied for any of the functions, it may also be determined as an error situation.

(Third mode)

In a third aspect, a description will be given of a UE operation in a case where PUCCH/PUSCH simultaneous transmission is performed in a UL collision handling framework.

In the UL collision processing framework, when PUCCH/PUSCH is simultaneously transmitted, PUCCH (UCI)/PUSCH multiplexing may be affected.

When it is determined that the PUCCH collides with a plurality of PUSCHs and is multiplexed, a case occurs in which the PUSCH to be UCI-multiplexed is selected.

In the related case, in the case where there is no PUSCH satisfying the condition of simultaneous transmission with the PUCCH, a PUSCH selection rule (rule) may also be judged/decided based on a specific condition. The specific condition may be the allocation position of PUSCH (or PUSCH occasion), PUSCH type.

For example, in the case where a plurality of PUSCHs are overlapped in a plurality of slots, the forefront PUSCH may be selected. Or if the overlapping PUSCHs exist in the same slot, the selection may be based on the type of each PUSCH. The PUSCH may be of the dynamic grant PUSCH (DG PUSCH) or the setting grant PUSCH (CG PUSCH). For example, DG PUSCH may also be preferentially selected.

Or in the case of selecting PUSCH, when there is PUSCH satisfying the condition of simultaneous transmission with PUCCH (but when the condition cannot be satisfied by a certain PUSCH but the condition of simultaneous transmission of PUCCH/PUSCH cannot be satisfied), at least one of the following options 3-1 to 3-2 may be applied as a PUSCH selection rule.

< Option 3-1>

More than 1 PUSCH capable of being transmitted simultaneously with PUCCH may also be excluded first before PUSCH selection (e.g., multiplexed PUSCH selection) for UCI multiplexing. Thereafter, PUSCH subjected to UCI multiplexing may also be selected based on a specific condition from among the remaining PUSCHs.

< Option 3-2>

More than 1 PUSCH capable of being transmitted simultaneously with PUCCH may not be excluded before PUSCH selection (e.g., multiplexed PUSCH selection) for UCI multiplexing. The PUSCH on which UCI multiplexing is performed may also consider all conflicting PUSCHs and be selected based on certain conditions. This may also mean that UCI is multiplexed to PUSCH even though the selected PUSCH can be transmitted simultaneously with PUCCH.

(Simultaneous transmission condition of PUCCH/PUSCH)

The determination as to how to set the simultaneous transmission of PUCCH/PUSCH to support/activate may also be made based on at least one of the priority of PUCCH/PUSCH (e.g., PHY priority), UCI type, multiplexing of UCI, and intra/inter-band CA.

The conditions for simultaneous transmission of PUCCH/PUSCH for collision situations may be determined based on the PUSCHs overlapping with PUCCH. For example, when at least one PUSCH in any CC cannot be transmitted simultaneously with PUCCH, it may be determined that the PUCCH/PUSCH simultaneous transmission condition is not satisfied.

For example, it is assumed that simultaneous transmission with PUCCH in cc#0 is supported/valid in hp_pusch#1 of cc#1, but is not supported/valid in hp_pusch#2 of cc#2 (refer to fig. 16). In this case, the lp_pucch#1 may not be transmitted simultaneously with the PUSCH. In this case, the lp_pucch may also be multiplexed to the PUSCH or discarded.

< UE capability information >

In the first to third aspects, the following UE capability (UE capability) may be set. In addition, the following UE capabilities may also be replaced with parameters (e.g., higher layer parameters) set from the network (e.g., base station) to the UE.

UE capability information on whether simultaneous transmission of PUCCH/PUSCH is supported may also be defined.

UE capability information on whether simultaneous transmission of PUCCH/PUSCH operating with multiplexing of rel.16 for the same priority is supported may also be defined.

UE capability information on whether simultaneous transmission of PUCCH/PUSCH operating with rel.17 later multiplexing for different priorities is supported may also be defined.

UE capability information regarding whether the simultaneously transmitted acknowledgement (or check/judgment) function of PUCCH/PUSCH is supported before UCI/PUSCH multiplexing may also be defined.

UE capability information on whether UCI/PUSCH multiplexing is supported before an acknowledgement transmitted simultaneously with PUCCH/PUSCH may also be defined.

The first to third aspects may be applied to a UE supporting/reporting at least one of the UE capabilities described above. Alternatively, the first to third aspects may be applied to UEs set from the network.

In addition, which of the control methods described in at least one of the first to third aspects is applied may be notified and set to the UE by a higher-layer parameter. Or may also be that the UE reports as capability information, e.g., UE capability (capability).

(Wireless communication System)

The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using one or a combination of the wireless communication methods according to the above embodiments of the present disclosure.

Fig. 17 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication by using long term evolution (Long Term Evolution (LTE)) standardized by the third generation partnership project (Third Generation Partnership Project (3 GPP)), the fifth generation mobile communication system new wireless (5 th generation mobile communication system New Radio (5G NR)), or the like.

The wireless communication system 1 may support dual connection (Multi-RAT dual connection (Multi-RAT Dual Connectivity (MR-DC))) between a plurality of radio access technologies (Radio Access Technology (RATs)). The MR-DC may also include a dual connection of LTE (evolved universal terrestrial radio Access (Evolved Universal Terrestrial Radio Access (E-UTRA))) with NR (E-UTRA-NR dual connection (E-UTRA-NR Dual Connectivity (EN-DC))), a dual connection of NR with LTE (NR-E-UTRA dual connection (NR-E-UTRA Dual Connectivity (NE-DC))), and the like.

In EN-DC, a base station (eNB) of LTE (E-UTRA) is a Master Node (MN), and a base station (gNB) of NR is a Slave Node (SN). In NE-DC, the base station (gNB) of NR is MN and the base station (eNB) of LTE (E-UTRA) is SN.

The wireless communication system 1 may also support dual connections between multiple base stations within the same RAT (e.g., dual connection (NR-NR dual connection (NR-NR Dual Connectivity (NN-DC))) of a base station (gNB) where both MN and SN are NRs).

The radio communication system 1 may include a base station 11 forming a macro cell C1 having a relatively wide coverage area, and base stations 12 (12 a to 12C) arranged in the macro cell C1 and forming a small cell C2 narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The arrangement, number, etc. of each cell and user terminal 20 are not limited to those shown in the figure. Hereinafter, the base stations 11 and 12 are collectively referred to as a base station 10 without distinction.

The user terminal 20 may also be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (Carrier Aggregation (CA)) using a plurality of component carriers (Component Carrier (CC)) and Dual Connectivity (DC).

Each CC may be included in at least one of the first Frequency band (Frequency Range 1 (FR 1)) and the second Frequency band (Frequency Range 2 (FR 2))). The macrocell C1 may be included in the FR1 and the small cell C2 may be included in the FR 2. For example, FR1 may be a frequency band of 6GHz or less (lower than 6GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24GHz (above-24 GHz). The frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be a higher frequency band than FR 2.

In each CC, the user terminal 20 may perform communication using at least one of time division duplexing (Time Division Duplex (TDD)) and frequency division duplexing (Frequency Division Duplex (FDD)).

The plurality of base stations 10 may also be connected by wire (e.g., optical fiber based on a common public radio interface (Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication is utilized as a Backhaul between the base stations 11 and 12, the base station 11 corresponding to a higher-level station may be referred to as an Integrated Access Backhaul (IAB) host (donor), and the base station 12 corresponding to a relay station (relay) may be referred to as an IAB node.

The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The Core Network 30 may include at least one of an evolved packet Core (Evolved Packet Core (EPC)), a 5G Core Network (5 GCN), a next generation Core (Next Generation Core (NGC)), and the like, for example.

The user terminal 20 may be a terminal supporting at least one of communication schemes such as LTE, LTE-a, and 5G.

In the wireless communication system 1, a wireless access scheme based on orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing (OFDM)) may be used. For example, cyclic prefix OFDM (Cyclic Prefix OFDM (CP-OFDM)), discrete fourier transform spread OFDM (Discrete Fourier Transform Spread OFDM (DFT-s-OFDM)), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access (OFDMA)), single carrier frequency division multiple access (SINGLE CARRIER Frequency Division Multiple Access (SC-FDMA)), and the like may be used in at least one of Downlink (DL)) and Uplink (UL).

The radio access scheme may also be referred to as waveform (waveform). In the radio communication system 1, other radio access schemes (for example, other single carrier transmission schemes and other multi-carrier transmission schemes) may be used for the UL and DL radio access schemes.

As the downlink channel, a downlink shared channel (physical downlink shared channel (Physical Downlink SHARED CHANNEL (PDSCH))), a broadcast channel (physical broadcast channel (Physical Broadcast Channel (PBCH)))), a downlink control channel (physical downlink control channel (Physical Downlink Control Channel (PDCCH))), and the like shared by the user terminals 20 may be used in the wireless communication system 1.

As the Uplink channel, an Uplink shared channel (Physical Uplink SHARED CHANNEL (PUSCH))), an Uplink control channel (Physical Uplink control channel (Physical Uplink Control Channel (PUCCH))), a Random access channel (Physical Random access channel (PRACH))), or the like shared by the user terminals 20 may be used in the wireless communication system 1.

User data, higher layer control information, system information blocks (System Information Block (SIBs)), and the like are transmitted through the PDSCH. User data, higher layer control information, etc. may also be transmitted through the PUSCH. In addition, a master information block (Master Information Block (MIB)) may also be transmitted through the PBCH.

Lower layer control information may also be transmitted through the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI))) including scheduling information of at least one of PDSCH and PUSCH.

The DCI scheduling PDSCH may be referred to as DL allocation, DL DCI, or the like, and the DCI scheduling PUSCH may be referred to as UL grant, UL DCI, or the like. The PDSCH may be replaced with DL data, and the PUSCH may be replaced with UL data.

In the detection of the PDCCH, a control resource set COntrol REsource SET (CORESET)) and a search space SEARCH SPACE may also be used. CORESET corresponds to searching for a resource of DCI. The search space corresponds to a search region of the PDCCH candidate (PDCCH CANDIDATES) and a search method. One CORESET may also be associated with one or more search spaces. The UE may also monitor CORESET associated with a certain search space based on the search space settings.

One search space may also correspond to PDCCH candidates corresponding to one or more aggregation levels (aggregation Level). One or more search spaces may also be referred to as a set of search spaces. In addition, "search space", "search space set", "CORESET", "CORESET set" and the like of the present disclosure may also be replaced with each other.

Uplink control information (Uplink Control Information (UCI)) including at least one of channel state information (CHANNEL STATE Information (CSI)), acknowledgement information (e.g., also referred to as hybrid automatic repeat request acknowledgement (Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK)), ACK/NACK, etc.), and scheduling request (Scheduling Request (SR)) may also be transmitted through the PUCCH. The random access preamble used to establish a connection with a cell may also be transmitted via the PRACH.

In addition, in the present disclosure, downlink, uplink, etc. may also be expressed without "link". The "Physical" may be used at the beginning of various channels.

In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a Downlink reference signal (Downlink REFERENCE SIGNAL (DL-RS)), and the like may be transmitted. As DL-RS, a Cell-specific reference signal (Cell-SPECIFIC REFERENCE SIGNAL (CRS)), a channel state Information reference signal (CHANNEL STATE Information REFERENCE SIGNAL (CSI-RS)), a demodulation reference signal (DeModulation REFERENCE SIGNAL (DMRS)), a Positioning Reference Signal (PRS)), a phase tracking reference signal (PHASE TRACKING REFERENCE SIGNAL (PTRS)), and the like may be transmitted in the wireless communication system 1.

The synchronization signal may be at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)), for example. The signal blocks including SS (PSS, SSs) and PBCH (and DMRS for PBCH) may also be referred to as SS/PBCH blocks, SS blocks (SSB)), or the like. In addition, SS, SSB, etc. may also be referred to as reference signals.

In the wireless communication system 1, as an Uplink reference signal (Uplink REFERENCE SIGNAL (UL-RS)), a measurement reference signal (Sounding REFERENCE SIGNAL (SRS)) and a demodulation reference signal (DMRS) may be transmitted. In addition, the DMRS may also be referred to as a user terminal specific reference signal (UE-SPECIFIC REFERENCE SIGNAL).

(Base station)

Fig. 18 is a diagram showing an example of a configuration of a base station according to one embodiment. The base station 10 includes a control unit 110, a transmitting/receiving unit 120, a transmitting/receiving antenna 130, and a transmission path interface (transmission LINE INTERFACE) 140. The control unit 110, the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140 may be provided with one or more components.

In this example, the functional blocks of the characteristic part in the present embodiment are mainly shown, and it is also conceivable that the base station 10 further has other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 110 performs control of the entire base station 10. The control unit 110 can be configured by a controller, a control circuit, or the like described based on common knowledge in the technical field of the present disclosure.

The control unit 110 may also control generation of signals, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission/reception, measurement, and the like using the transmission/reception unit 120, the transmission/reception antenna 130, and the transmission path interface 140. The control unit 110 may generate data, control information, a sequence (sequence), and the like transmitted as signals, and forward the generated data to the transmitting/receiving unit 120. The control unit 110 may perform call processing (setting, release, etc.) of the communication channel, state management of the base station 10, management of radio resources, and the like.

The transmitting/receiving unit 120 may include a baseband (baseband) unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may also include a transmission processing unit 1211 and a reception processing unit 1212. The transmitting/receiving unit 120 may be configured of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (PHASE SHIFTER)), a measurement circuit, a transmitting/receiving circuit, and the like, which are described based on common knowledge in the technical field of the present disclosure.

The transmitting/receiving unit 120 may be configured as an integral transmitting/receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmission unit may be composed of the transmission processing unit 1211 and the RF unit 122. The receiving unit may be composed of a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

The transmitting/receiving antenna 130 may be constituted by an antenna described based on common knowledge in the technical field of the present disclosure, for example, an array antenna or the like.

The transmitting/receiving unit 120 may transmit the downlink channel, the synchronization signal, the downlink reference signal, and the like. The transmitting/receiving unit 120 may receive the uplink channel, the uplink reference signal, and the like.

The transmitting-receiving unit 120 may also form at least one of a transmit beam and a receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), and the like.

The transmission/reception section 120 (transmission processing section 1211) may perform processing of a packet data convergence protocol (PACKET DATA Convergence Protocol (PDCP)) layer, processing of a radio link control (Radio Link Control (RLC)) layer (for example, RLC retransmission control), processing of a medium access control (Medium Access Control (MAC)) layer (for example, HARQ retransmission control), and the like with respect to data, control information, and the like acquired from the control section 110, for example, to generate a bit sequence to be transmitted.

The transmission/reception section 120 (transmission processing section 1211) may perform transmission processing such as channel coding (error correction coding may be included), modulation, mapping, filter processing (filtering processing), discrete fourier transform (Discrete Fourier Transform (DFT)) processing (if necessary), inverse fast fourier transform (INVERSE FAST Fourier Transform (IFFT)) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

The transmitting/receiving unit 120 (RF unit 122) may perform modulation, filter processing, amplification, etc. for the baseband signal in the radio band, and transmit the signal in the radio band via the transmitting/receiving antenna 130.

On the other hand, the transmitting/receiving unit 120 (RF unit 122) may amplify, filter-process, demodulate a baseband signal, and the like, with respect to a signal in a radio frequency band received through the transmitting/receiving antenna 130.

The transmitting/receiving section 120 (reception processing section 1212) may apply reception processing such as analog-to-digital conversion, fast fourier transform (Fast Fourier Transform (FFT)) processing, inverse discrete fourier transform (INVERSE DISCRETE Fourier Transform (IDFT)) processing (if necessary), filter processing, demapping, demodulation, decoding (error correction decoding may be included), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data.

The transmitting-receiving unit 120 (measuring unit 123) may also perform measurements related to the received signals. For example, the measurement unit 123 may perform radio resource management (Radio Resource Management (RRM)) measurement, channel state information (CHANNEL STATE Information (CSI)) measurement, and the like based on the received signal. The measurement unit 123 may also measure for received Power (e.g., reference signal received Power (REFERENCE SIGNAL RECEIVED Power (RSRP)), received Quality (e.g., reference signal received Quality (REFERENCE SIGNAL RECEIVED Quality (RSRQ)), signal-to-interference-plus-noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal-to-noise ratio (Signal to Noise Ratio (SNR)), signal strength (e.g., received signal strength indicator (RECEIVED SIGNAL STRENGTH Indicator (RSSI))), propagation path information (e.g., CSI), and so on. The measurement results may also be output to the control unit 110.

The transmission path interface 140 may transmit and receive signals (backhaul signaling) to and from devices, other base stations 10, and the like included in the core network 30, or may acquire and transmit user data (user plane data), control plane data, and the like for the user terminal 20.

In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may be configured by at least one of the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140.

In at least one of the case where a plurality of UL transmissions of the same priority overlap and the case where a plurality of UL transmissions of different priorities overlap, when a solution (resolution) of the overlapping is sought by using a plurality of steps, the transmission/reception unit 120 may receive simultaneous transmission of the uplink control channel and the uplink shared channel, which are supported for transmission, in at least one of the plurality of steps.

(User terminal)

Fig. 19 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting/receiving unit 220, and a transmitting/receiving antenna 230. The control unit 210, the transmitting/receiving unit 220, and the transmitting/receiving antenna 230 may be provided with one or more types.

In this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and it is also conceivable that the user terminal 20 further has other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 210 performs control of the entire user terminal 20. The control unit 210 can be configured by a controller, a control circuit, or the like described based on common knowledge in the technical field of the present disclosure.

The control unit 210 may also control the generation of signals, mapping, etc. The control unit 210 may control transmission/reception, measurement, and the like using the transmission/reception unit 220 and the transmission/reception antenna 230. The control unit 210 may generate data, control information, a sequence, and the like transmitted as signals, and forward the generated data to the transmitting/receiving unit 220.

The transceiver unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmitting/receiving unit 220 may be configured of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitting/receiving circuit, and the like, which are described based on common knowledge in the technical field of the present disclosure.

The transmitting/receiving unit 220 may be configured as an integral transmitting/receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmission means may be constituted by the transmission processing means 2211 and the RF means 222. The receiving unit may be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

The transmitting/receiving antenna 230 may be constituted by an antenna described based on common knowledge in the technical field of the present disclosure, for example, an array antenna or the like.

The transceiver unit 220 may also receive the above-described downlink channel, synchronization signal, downlink reference signal, and the like. The transceiver unit 220 may transmit the uplink channel, the uplink reference signal, and the like.

The transmitting-receiving unit 220 may also form at least one of a transmit beam and a receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), and the like.

The transmission/reception section 220 (transmission processing section 2211) may perform, for example, PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control) and the like with respect to the data, control information and the like acquired from the control section 210, and generate a bit sequence to be transmitted.

The transmission/reception section 220 (transmission processing section 2211) may perform transmission processing such as channel coding (error correction coding may be included), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion, and the like for a bit string to be transmitted, and output a baseband signal.

Further, whether to apply DFT processing may be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmission/reception section 220 (transmission processing section 2211) may perform DFT processing as the transmission processing for transmitting the channel using a DFT-s-OFDM waveform, and if not, the transmission/reception section 220 (transmission processing section 2211) may not perform DFT processing as the transmission processing.

The transmitting/receiving unit 220 (RF unit 222) may perform modulation, filter processing, amplification, etc. for the baseband signal in the radio frequency band, and transmit the signal in the radio frequency band via the transmitting/receiving antenna 230.

On the other hand, the transmitting/receiving unit 220 (RF unit 222) may amplify, filter-process, demodulate a baseband signal, and the like, with respect to a signal in a radio frequency band received through the transmitting/receiving antenna 230.

The transmitting/receiving section 220 (reception processing section 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filter processing, demapping, demodulation, decoding (error correction decoding may be included), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data.

The transceiver unit 220 (measurement unit 223) may also perform measurements related to the received signals. For example, the measurement unit 223 may also perform RRM measurement, CSI measurement, and the like based on the received signal. The measurement unit 223 may also measure for received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230.

In at least one of the case where a plurality of UL transmissions having the same priority overlap and the case where a plurality of UL transmissions having different priorities overlap, when the overlapping is solved by using a plurality of steps, the control unit 210 may control simultaneous transmission of the uplink control channel and the uplink shared channel in at least one of the plurality of steps.

The transmitting/receiving unit 220 may perform UL transmission with the overlap resolved.

The simultaneous transmission of the uplink control channel and the uplink shared channel may be applied to the multiplexing of the uplink control channel and the uplink shared channel of the same priority.

The simultaneous transmission of the uplink control channel and the uplink shared channel may also be applied in the step of prioritizing between different priorities.

In the step of applying the simultaneous transmission of the uplink control channel and the uplink shared channel, the control unit 210 may determine the application of the simultaneous transmission of the uplink control channel and the uplink shared channel after multiplexing the uplink control channel and the uplink shared channel.

(Hardware construction)

The block diagrams used in the description of the above embodiments show blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. The implementation method of each functional block is not particularly limited. That is, each functional block may be realized by one device physically or logically combined, or two or more devices physically or logically separated may be directly or indirectly connected (for example, by a wire, a wireless, or the like) and realized by these plural devices. The functional blocks may also be implemented in software as a combination of one or more of the above-described devices.

Here, the functions include, but are not limited to, judgment, decision, judgment, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, establishment, comparison, assumption, expectation, view, broadcast (broadcasting), notification (notifying), communication (communicating), forwarding (forwarding), configuration (configuring), reconfiguration (reconfiguring), allocation (allocating, mapping), assignment (assigning), and the like. For example, a functional block (structural unit) that realizes the transmission function may also be referred to as a transmission unit (TRANSMITTING UNIT), a transmitter (transmitter), or the like. As described above, the implementation method is not particularly limited.

For example, a base station, a user terminal, and the like in one embodiment of the present disclosure may also function as a computer that performs the processing of the wireless communication method of the present disclosure. Fig. 17 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to an embodiment. The base station 10 and the user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

In addition, in the present disclosure, terms of devices, circuits, apparatuses, parts (sections), units, and the like can be replaced with each other. The hardware configuration of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to not include a part of the devices.

For example, the processor 1001 is shown as only one, but there may be multiple processors. Further, the processing may be performed by one processor, or the processing may be performed by two or more processors simultaneously, sequentially, or by other means. The processor 1001 may be realized by one or more chips.

Each function in the base station 10 and the user terminal 20 is realized by, for example, reading specific software (program) into hardware such as the processor 1001 and the memory 1002, performing an operation by the processor 1001, controlling communication via the communication device 1004, or controlling at least one of reading and writing of data in the memory 1002 and the memory 1003.

The processor 1001, for example, causes an operating system to operate to control the entire computer. The processor 1001 may be configured by a central processing unit (Central Processing Unit (CPU)) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, at least a part of the control unit 110 (210), the transmitting/receiving unit 120 (220), and the like described above may be implemented by the processor 1001.

Further, the processor 1001 reads out a program (program code), a software module, data, or the like from at least one of the memory 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment can be used. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same may be implemented for other functional blocks.

The Memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of Read Only Memory (ROM), erasable programmable Read Only Memory (Erasable Programmable ROM (EPROM)), electrically erasable programmable Read Only Memory (ELECTRICALLY EPROM (EEPROM)), random access Memory (Random Access Memory (RAM)), and other suitable storage medium. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage), or the like. The memory 1002 can store programs (program codes), software modules, and the like executable to implement a wireless communication method according to one embodiment of the present disclosure.

The storage 1003 may also be a computer-readable recording medium, for example, composed of at least one of a flexible disk (flexible disk), a Floppy (registered trademark) disk, an magneto-optical disk (for example, a Compact disk read only memory (CD-ROM)), a digital versatile disk, a Blu-ray (registered trademark) disk, a removable magnetic disk (removabledisc), a hard disk drive, a smart card, a flash memory device (for example, a card, a stick, a key drive), a magnetic stripe (strip), a database, a server, and other suitable storage medium. The storage 1003 may also be referred to as secondary storage.

The communication device 1004 is hardware (transmission/reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, or the like, for example. In order to realize at least one of frequency division duplexing (Frequency Division Duplex (FDD)) and time division duplexing (Time Division Duplex (TDD)), the communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like. For example, the transmitting/receiving unit 120 (220), the transmitting/receiving antenna 130 (230), and the like described above may be implemented by the communication device 1004. The transmitting/receiving unit 120 (220) may be implemented by physically or logically separating the transmitting unit 120a (220 a) and the receiving unit 120b (220 b).

The input device 1005 is an input apparatus (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, or the like) that receives an input from the outside. The output device 1006 is an output apparatus (for example, a display, a speaker, a Light Emitting Diode (LED)) lamp, or the like that performs output to the outside. The input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

The processor 1001, the memory 1002, and other devices are connected by a bus 1007 for communicating information. The bus 1007 may be formed using a single bus or may be formed using different buses between devices.

The base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DIGITAL SIGNAL Processor (DSP)), an Application SPECIFIC INTEGRATED Circuit (ASIC), a programmable logic device (Programmable Logic Device (PLD)), and a field programmable gate array (Field Programmable GATE ARRAY (FPGA)), or may be configured to implement a part or all of the functional blocks by using the hardware. For example, the processor 1001 may also be implemented using at least one of these hardware.

(Modification)

In addition, with respect to terms described in the present disclosure and terms required for understanding the present disclosure, terms having the same or similar meanings may be substituted. For example, channels, symbols, and signals (signals or signaling) may also be interchanged. In addition, the signal may also be a message. The reference signal (REFERENCE SIGNAL) can also be simply referred to as RS, and can also be referred to as Pilot (Pilot), pilot signal, etc., depending on the standard applied. In addition, the component carrier (Component Carrier (CC)) may also be referred to as a cell, frequency carrier, carrier frequency, etc.

A radio frame may also consist of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe. Further, a subframe may also be formed of one or more slots in the time domain. The subframe may also be a fixed length of time (e.g., 1 ms) independent of the parameter set (numerology).

Here, the parameter set may also be a communication parameter applied in at least one of transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of a subcarrier spacing (SubCarrier Spacing (SCS)), a bandwidth, a symbol length, a cyclic prefix length, a Transmission time interval (Transmission TIME INTERVAL (TTI)), a number of symbols per TTI, a radio frame structure, a specific filter process performed by a transceiver in a frequency domain, a specific windowing (windowing) process performed by the transceiver in a time domain, and the like.

A slot may also be formed from one or more symbols in the time domain, orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing (OFDM)) symbols, single carrier frequency division multiple access (SINGLE CARRIER Frequency Division Multiple Access (SC-FDMA)) symbols, and so on. Furthermore, the time slots may also be time units based on parameter sets.

The time slot may also contain a plurality of mini-slots. Each mini-slot may also be formed of one or more symbols in the time domain. In addition, the mini-slot may also be referred to as a sub-slot. Mini-slots may also be made up of a fewer number of symbols than slots. PDSCH (or PUSCH) transmitted in a larger time unit than the mini-slot may also be referred to as PDSCH (PUSCH) mapping type a. PDSCH (or PUSCH) transmitted using mini-slots may also be referred to as PDSCH (PUSCH) mapping type B.

The radio frame, subframe, slot, mini-slot, and symbol each represent a unit of time when a signal is transmitted. Other designations of radio frames, subframes, slots, mini-slots, and symbols may be used as well. In addition, the frame, subframe, slot, mini-slot, symbol, and the like units in the present disclosure may also be replaced with each other.

For example, one subframe may also be referred to as a TTI, a plurality of consecutive subframes may also be referred to as a TTI, and one slot or one mini-slot may also be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in the conventional LTE, may be a period (for example, 1 to 13 symbols) shorter than 1ms, or may be a period longer than 1 ms. The unit indicating the TTI may be referred to as a slot, a mini-slot, or the like, instead of a subframe.

Here, TTI refers to, for example, a scheduled minimum time unit in wireless communication. For example, in the LTE system, a base station performs scheduling for each user terminal to allocate radio resources (frequency bandwidth, transmission power, and the like that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited thereto.

The TTI may be a transmission time unit of a data packet (transport block), a code block, a codeword, or the like subjected to channel coding, or may be a processing unit such as scheduling or link adaptation. In addition, when a TTI is given, a time interval (e.g., the number of symbols) in which a transport block, a code block, a codeword, etc. are actually mapped may be shorter than the TTI.

In addition, in the case where one slot or one mini-slot is referred to as a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may also be the minimum time unit of scheduling. In addition, the number of slots (mini-slots) constituting the minimum time unit of the schedule can also be controlled.

A TTI having a time length of 1ms may also be referred to as a normal TTI (TTI in 3gpp rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a slot, etc. A TTI that is shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini-slot, a sub-slot, a slot, etc.

In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be replaced with a TTI having a time length exceeding 1ms, and a short TTI (e.g., a shortened TTI, etc.) may be replaced with a TTI having a TTI length less than the long TTI and a TTI length of 1ms or more.

A Resource Block (RB) is a Resource allocation unit of a time domain and a frequency domain, and may include one or a plurality of consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in the RB may be the same regardless of the parameter set, and may be 12, for example. The number of subcarriers included in the RB may also be decided based on the parameter set.

Further, the RB may also contain one or more symbols in the time domain, and may be one slot, one mini-slot, one subframe, or one TTI in length. One TTI, one subframe, etc. may also be respectively composed of one or more resource blocks.

In addition, one or more RBs may also be referred to as Physical Resource Blocks (PRBs), subcarrier groups (SCGs), resource element groups (Resource Element Group (REGs)), PRB pairs, RB peering.

Furthermore, a Resource block may also be composed of one or more Resource Elements (REs). For example, one RE may be a subcarrier and a radio resource area of one symbol.

A Bandwidth Part (BWP) (which may also be referred to as a partial Bandwidth, etc.) may also represent a subset of consecutive common RBs (common resource blocks (common resource blocks)) for a certain parameter set in a certain carrier. Here, the common RB may also be determined by an index of the RB with reference to the common reference point of the carrier. PRBs may be defined in a BWP and numbered in the BWP.

The BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL). For a UE, one or more BWP may also be set in one carrier.

At least one of the set BWP may be active, and the UE may not contemplate transmission and reception of a specific signal/channel other than the active BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced with "BWP".

The above-described configurations of radio frames, subframes, slots, mini slots, symbols, and the like are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the Cyclic Prefix (CP) length, and the like can be variously changed.

The information, parameters, and the like described in the present disclosure may be expressed in absolute values, relative values to a specific value, or other corresponding information. For example, radio resources may also be indicated by a particular index.

In the present disclosure, the names used for parameters and the like are not restrictive names in all aspects. Further, the mathematical expression or the like using these parameters may also be different from that explicitly disclosed in the present disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting names in all respects.

Information, signals, etc. described in this disclosure may also be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips (chips), and the like may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

Further, information, signals, etc. can be output in at least one of the following directions: from higher layer (upper layer) to lower layer (lower layer), and from lower layer to higher layer. Information, signals, etc. may also be input and output via a plurality of network nodes.

The input/output information, signals, and the like may be stored in a specific location (for example, a memory), or may be managed by a management table. The input and output information, signals, etc. may be overwritten, updated, or added. The outputted information, signals, etc. may also be deleted. The entered information, signals, etc. may also be sent to other devices.

The notification of information is not limited to the embodiment described in the present disclosure, but may be performed by other methods. For example, notification of information in the present disclosure may also be implemented by physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI)))), higher layer signaling (e.g., radio resource control (Radio Resource Control (RRC)) signaling, broadcast information (master information block (Master Information Block (MIB)), system information block (System Information Block (SIB)) or the like), medium access control (Medium Access Control (MAC)) signaling), other signals, or a combination thereof.

The physical Layer signaling may be referred to as Layer 1/Layer 2 (L1/L2)) control information (L1/L2 control signal), L1 control information (L1 control signal), or the like. The RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration)) message, or the like. The MAC signaling may be notified using, for example, a medium access control element (MAC Control Element (CE)).

Note that the notification of specific information (for example, notification of "X") is not limited to explicit notification, and may be performed implicitly (for example, by notification of no specific information or notification of other information).

The determination may be performed by a value (0 or 1) represented by one bit, a true or false value (boolean) represented by true or false, or a comparison of values (e.g., with a specific value).

Software, whether referred to as software (firmware), middleware (middleware-software), microcode (micro-code), hardware description language, or by other names, should be construed broadly to mean instructions, instruction sets, codes (codes), code segments (code fragments), program codes (program codes), programs (programs), subroutines (sub-programs), software modules (software modules), applications (applications), software applications (software application), software packages (software packages), routines (routines), subroutines (sub-routines), objects (objects), executable files, execution threads, procedures, functions, and the like.

In addition, software, instructions, information, etc. may also be transmitted and received via a transmission medium. For example, in the case of transmitting software from a website, server, or other remote source (remote source) using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (Digital Subscriber Line (DSL)), etc.) and wireless technology (infrared, microwave, etc.), the at least one of wired technology and wireless technology is included in the definition of transmission medium.

The terms "system" and "network" as used in this disclosure can be used interchangeably. "network" may also mean a device (e.g., a base station) included in a network.

In the present disclosure, terms such as "precoding", "precoder", "weights (precoding weights)", "Quasi Co-Location (QCL)", "transmission setting instruction state Transmission Configuration Indication state (TCI state)", "spatial relationship (spatial relationship)", "spatial domain filter (spatial domain filter)", "transmit power", "phase rotation", "antenna ports", "antenna port group", "reference signal (REFERENCE SIGNAL (RS) port group)", "layer number", "rank", "resource set", "resource group", "beam width", "beam angle", "antenna element", "panel", "transmission reception point", and the like can be used interchangeably.

In the present disclosure, terms such as "Base Station (BS))", "radio Base Station", "fixed Station", "NodeB", "eNB (eNodeB)", "gNB (gndeb)", "access Point", "Transmission Point (Transmission Point (TP))", "Reception Point (RP))", "Transmission Reception Point (Transmission/Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", and the like can be used interchangeably. There are also cases where the base station is referred to by terms of a macrocell, a small cell, a femtocell, a picocell, and the like.

The base station can accommodate one or more (e.g., three) cells. In the case of a base station accommodating multiple cells, the coverage area of the base station can be divided into multiple smaller areas, each of which can also provide communication services through a base station subsystem (e.g., a small base station for indoor use (remote radio head (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a portion or the entirety of the coverage area of at least one of the base station and the base station subsystem that is in communication service within that coverage area.

In the present disclosure, terms such as "Mobile Station (MS)", "User terminal", "User Equipment (UE)", "terminal", and the like can be used interchangeably.

There are also situations where a mobile station is referred to by a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand-held communicator (hand set), user agent, mobile client, or a number of other suitable terms.

At least one of the base station and the mobile station may also be referred to as a transmitting apparatus, a receiving apparatus, a wireless communication apparatus, or the like. At least one of the base station and the mobile station may be a device mounted on a mobile body, or the like. The mobile body may be a vehicle (e.g., a vehicle, an airplane, etc.), a mobile body that moves unmanned (e.g., an unmanned aerial vehicle (drone), an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may be an internet of things (Internet of Things (IoT)) device such as a sensor.

In addition, the base station in the present disclosure may be replaced with a user terminal. For example, the various aspects/embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between a plurality of user terminals (for example, may also be referred to as Device-to-Device (D2D)), vehicle-to-evaluation (V2X), or the like. In this case, the user terminal 20 may have the functions of the base station 10 described above. In addition, terms such as "uplink", "downlink", and the like may be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channels, downlink channels, etc. may be replaced with side link channels.

Likewise, the user terminal in the present disclosure may be replaced with a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

In the present disclosure, an operation performed by a base station is sometimes performed by an upper node (upper node) thereof, as the case may be. Obviously, in a network including one or more network nodes (network nodes) having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (for example, considering Mobility MANAGEMENT ENTITY (MME)), serving-Gateway (S-GW), or the like, but not limited thereto, or a combination thereof.

The embodiments described in the present disclosure may be used alone, in combination, or switched depending on the execution. The processing procedure, the sequence, the flow chart, and the like of each embodiment/mode described in the present disclosure may be changed as long as they are not contradictory. For example, for the methods described in this disclosure, elements of the various steps are presented using the illustrated order, but are not limited to the particular order presented.

The various modes/embodiments described in the present disclosure can also be applied to long term evolution (Long Term Evolution (LTE)), LTE-Advanced (LTE-a), LTE-Beyond (LTE-B), upper 3G, IMT-Advanced, fourth-generation mobile communication system (4 th generation mobile communication system (4G)), fifth-generation mobile communication system (5 th generation mobile communication system (5G)), sixth-generation mobile communication system (6 th generation mobile communication system (6G)), x-th-generation mobile communication system (xth generation mobile communication system (xG)) (xG (x is, for example, an integer, a decimal)), future Radio access (Future Radio Access (FRA)), new Radio access technology (New-Radio Access Technology (RAT)), new Radio (NR), new Radio access (NX)), new-generation Radio access (Future generation Radio access (FX)), global mobile communication system (Global System for Mobile communications (GSM (registered trademark)), 2000, ultra mobile broadband (Ultra Mobile Broadband (B)), IEEE 802.11 (IEEE-Fi (registered trademark (Wi) 16), bluetooth (20, ultra-WideBand (Ultra-WideBand) (registered trademark) and the like), and further, a method of obtaining them based on suitable expansion of these systems, multiple systems may also be applied in combination (e.g., LTE or a combination of LTE-a and 5G, etc.).

The term "based on" as used in the present disclosure is not intended to mean "based only on" unless specifically written otherwise. In other words, the recitation of "based on" means "based only on" and "based at least on" both.

Any reference to elements using references to "first," "second," etc. in this disclosure is not intended to limit the number or order of such elements in its entirety. These designations may be used in this disclosure as a convenient method of distinguishing between 2 or more elements. Thus, reference to a first and second element does not mean that only 2 elements can be employed or that in some form the first element must precede the second element.

The term "determining" used in the present disclosure is in the case of including various operations. For example, the "judgment (decision)" may refer to judgment (judging), calculation (computing), processing (processing), derivation (deriving), investigation (INVESTIGATING), search (looking up (lookup), search, inquiry (query)) (e.g., search in a table, database, or other data structure), confirmation (ASCERTAINING), or the like as "judgment (decision)".

The "determination (decision)" may be regarded as "determination (decision)" as a reception (e.g., receiving information), transmission (e.g., transmitting information), input (input), output (output), access (accessing) (e.g., accessing data in a memory), or the like.

Further, "judge (decide)" may be regarded as "judge (decide)", which is to be performed by solving (resolving), selecting (selecting), selecting (choosing), establishing (establishing), comparing (comparing), and the like. That is, "determining (determining)" may refer to some actions as "determining (determining)".

The "judgment (decision)" may be replaced with "assumption (assuming)", "expectation (expecting)", "consider (considering)", or the like.

The "maximum transmission power" described in the present disclosure may mean a maximum value of transmission power, a nominal maximum transmission power (nominal UE maximum transmission power (the nominal UE maximum transmit power)), or a nominal maximum transmission power (nominal UE maximum transmission power (the rated maximum transmit power)).

The terms "connected", "coupled", or all variations thereof as used in this disclosure mean all connections or couplings, either direct or indirect, between two or more elements thereof, and can include the case where one or more intervening elements are present between two elements that are "connected" or "coupled" to each other. The bonding or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may be replaced with "access".

In the present disclosure, where two elements are connected, it is contemplated that more than one wire, cable, printed electrical connection, etc. can be used, and electromagnetic energy, etc. having wavelengths in the wireless frequency domain, the microwave region, the optical (both visible and invisible) region, etc. can be used as several non-limiting and non-inclusive examples, to be "connected" or "joined" to each other.

In the present disclosure, the term "a is different from B" may also mean that "a is different from B". In addition, the term may also mean that "A and B are each different from C". Terms such as "separate," coupled, "and the like may also be construed in the same manner as" different.

In the case where "including", "containing", and variations thereof are used in the present disclosure, these terms are meant to be inclusive in the same sense as the term "comprising". Further, the term "or" as used in this disclosure does not mean exclusive or.

In the present disclosure, in the case where an article is appended by translation, for example, a, an, and the in english, the present disclosure may also include the case where a noun following the article is in plural.

While the invention according to the present disclosure has been described in detail, it is obvious to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented as a modification and variation without departing from the spirit and scope of the invention defined based on the description of the claims. Accordingly, the description of the present disclosure is for illustrative purposes and is not intended to limit the invention in any way.

The present application is based on Japanese patent application No. 2021-132978 filed on 8/17/2021. The contents are incorporated herein in their entirety.

Claims (5)

1. A terminal, comprising:

A control unit configured to control simultaneous transmission of an uplink control channel and an uplink shared channel in at least one of a plurality of steps when the overlapping is resolved by the plurality of steps in at least one of a case where a plurality of UL transmissions having the same priority overlap and a case where a plurality of UL transmissions having different priorities overlap; and

And a transmitting unit configured to perform UL transmission in which the overlap is resolved.

2. The terminal of claim 1, wherein,

The simultaneous transmission of the uplink control channel and the uplink shared channel is applied to the step of multiplexing the uplink control channel and the uplink shared channel of the same priority.

3. The terminal of claim 1, wherein,

The simultaneous transmission of the uplink control channel and the uplink shared channel is applied in the step of prioritizing between different priorities.

4. The terminal according to any one of claim 1 to claim 3, wherein,

In the step of applying the simultaneous transmission of the uplink control channel and the uplink shared channel, the control unit determines the application of the simultaneous transmission of the uplink control channel and the uplink shared channel after multiplexing the uplink control channel and the uplink shared channel.

5. A wireless communication method for a terminal includes:

a procedure for controlling simultaneous transmission of an uplink control channel and an uplink shared channel in at least one of a plurality of steps when the overlapping is solved by the plurality of steps in at least one of a case where a plurality of UL transmissions of the same priority overlap and a case where a plurality of UL transmissions of different priorities overlap; and

And performing a procedure of UL transmission in which the overlap is resolved.